Centrifugal dome with condensing arrangement



Nov. 5, 1929. c. SCHMITZ 1,734,533

CENTRIFUGAL DOME WITH CONDENSING ARRANGEMENT Filed Oct. 3. 1928 2 Sheets-Sheet 2 Fig. 3

Patented Nov. 5, 1929 UNITED STATES PATIENT; OFFICE CARL SCHMITZ, 0F UELDE, GERMANY, ASSIGNOR TO THE FIRM RAMESOHL & SCHMIDT A.-G., 0F OELDE, GERMANY.

CENTRIFUGAL DOME WITH CONDENSING ARRANGEMENT Application filed October a, 1928, Serial No. 310,148, and in Germany September 10, 1927.

the usual centrifugal-domes, divided into catch-chambers, without causing the disadvantage, that the produced foam-, or vapourbubbles escape into the air-space surrounding the centrifugaland are lost. If the loss of the condensate from vapours and foam is for once important in an economical respect, attention to the separator and working in its vicinit besides rendered diliicult consequent to t e molestation and contamination caused by the said separation and directly made im ossible in the case of corrosive vapours. n the other hand, the danger, that explosive mixtures are being formed by the gases escaping from the separator, must at all events be avoided. Vapour-fogs are generally penetrating into the separator-frame and exert anoxious influence upon the bearings. In the case of some liquids, quite anundesirable concentration of the material worked by the centrifugal is produced by the lost condensates of valuable diluting-admixtures.

The catch-chambers, drain-pipes and adjacent receptacles are filled, under excessive formationof foam, to such an extent with foam,

that a regular discharge is prevented and the capacity of the centrifugal can not be fully utilized.

It is generally endeavoured to eliminate these drawbacks thereby, that the dome of the centrifugal is closed up air-tight and connected by pipe-lines with equally tight receiving-vessels. This means however, that large space, an expensive plant and cost of maintenance are required and a special condensing-plant has to be installed besides. The

inavoidable pipe-packings give likewise always cause for troubles. c. The present invention offers an extraordinary simple arrangement for condensing moist gases and foam within the centrifugal. For this purpose, a .plate or partition has been provided, forming between the cover or roof of the centrifugal an intermediate space, connected with the lower catch-basin or chamber.

The stream of liquid, and the gas-stream, are conducted in opposite directions towards the desired zones. i

The catch-chamber can be provided with an outlet fitted with a hydraulic closure for aiding the said arrangement.

The suction-effect of the escaping liquidstream in the catch-chamber is being supported by the pressure produced at the periphery of the catch-basin consequent to the hydraulic closure. The vapours will therefore pass easier over the screen, as if the hydraulic closure would be missing.

The arrangement is illustrated in the drawing by way of an example, wherein Figure 1 shows the arrangement with hydraulic closure, and

Figure 2 without the same.

Figure 3 illustrates a modified form, in which the cover of the catch-chamber is replaced by the roof of the centrifugal.

Figure 4 shows an arrangement, being a combination of Figs. 1 and 3.

According to the embodiment of my inven tion, shown in Figure 1, the housing comprises a circular base frame 1 provided with an annular bearing support 2 and an upper cylindrical section 3 provided with a discharge spout 4 and an overflow spout 5. A rotary drum 6 mounted on a vertical shaft 7 journalled in the bearing support2, is provided with a frusto-conical upper portion 8 which merges into a cylindrical nozzle 9 provided with discharge outlets 10. A cylin drical partition wall 11 has "a frusto-conical upper portion 12 contracted upwardly'around and below the nozzle 9. The section 3 of the cylindrical housing is formed with a catch chamber for collecting the fluid discharging from the discharge outlets 10. Mounted within the housing section 3 is a circular dome 13 which is contracted upwardly around a reduced cylindrical portion 14 and above the discharge outlets of said rotor nozzle. An upwardly contracted annular passage or channel 15 is provided between the under surface of the circular dome 13 and the upper surface of a curved segmental bafile plate 16 which terminates above the nozzle 9 but has its upper edge separatedtherei roin by an ennular space 17. A cylindrical receptacle 18 for the "fluid to be charged into the centrifugal, is connected by a tubular conductor 19 to the upper end or the centrifugal,

According to Figure 2 of the drawings, the annular space into which the centrifugal discharges, couununicates through a down I combined pressure and suction er'l'ects prochamber between the bafilc duce a rapid and effective separation of the gaseous portions'rrom the liquid and a flow of said gaseous portions upwardly through the channel 15 towards the axis of the rotor.

The thrown on" liquid, iurnps together with the partly enclosed, partly in form vapour Quid-bubcl'llower or learn carried along separated l Poles, over to the catch-chamber opening or the annular canal; I

The vapours rise therefore from below into the intermediate space between the dom and battle-plates and are carried downwa a the lower free opening, by the injectoreik action or /the material discharged from the centrifugal. By this jumping over '5 the lie;- uid-bubbles to the catch-chamber, the lower canal-opening is closed by EllQlHlCl-fill'fi, from which the upwards moving gas-bubbles are deflected by the current produced in the canal, or are being sucked through theliquid-iilrn. Some or" the bubbles have been condensed during their progress toward the catch-chainher while the gaseous constituents rising into the channel 15, are sucked in"o the annular late and the dome 1d, and are entrained by the upwardly moving fluid in the annular channel to be ejected above.

The condensate is retained in the material,

leaving the catch-chamber of the centrifugal free from gas and foam,

As explained above, a suction-effect is to be obtained by the escaping-liquid-str-eam.

This suctionefiect is however supported by a hydraulic-closure, which latter produces a ressure at the eripher of the catch-basin therefore causing anaccurnulation of the gasseparation in the chambers, whereby the gases are imported a surplus-pressure and consequently more easily driven into the separator channel and from thence forced into the liquid-space, whereln they are condensed.

(a Y insane According to the embodiment of my invention shown in Figure 3, the cover 20 of the upper housing section "forms one wall of the separator channel 21, the other wall of said channel being formed by the partition wall or bridle-plate 22 which is provided with 21 depending cylindrical wall or extension 23.

In the embodiment of my invention shown n Figure 1-, upper catch-chamber of greatly reduced diameter, is provided. this form of my centrifugal, an annular chain nel 25 is formed above the bafile or partition 26, the bottom wall 27 of the upper catchchamber 24 extended over the annular space the top of bat le 26.

The advantage of the arrangement consists herein, that me annularcanal for the return- J a to ow of the vapours has become very la end that the upper and side-walls strike outer atmosphere directly, so that a certai cooling talres place at this point, where condensation is favourably influenced.

I claim: J

1, In a centrifugal separator, the combinetion of a housing provided with a catchchamber, a centrifugal rotor mounted within. sai housing and provided with a nozzle discharging into said catch-chamber, the bottom wall of said catch-chamber being contracted upwardly around and below said nozzle, 2. battle-plate forming the top-wall of said catch-chamber, said baffle-plate being contracted upwardly around and above said nozale. a partition wall arranged above said baffle-plate and suitably disposed with respect thereto to "form an upwardly and illwardly contracted channel, said battle-plate being-provided with an opening into said catch chaniber and above said nozzle, theed channel by an opening'adjacent to andv above the discharge outlet oi said centrifugal rotor, said inwardly and upwardly contracted channel being provided with a closed top wall.

3. In a centrifugal separator, the combination of a housing having a catch-chamber discharging outwardly and in communication with the larger lower end of an upwardly and inwardly contracted channel, a centrifugal rotor discharging radially outward into said catch-chamber,said catch-chamber being in communication with the contracted upper end of said upwardly and inwardly contractare; the contracted upper ed channel by an opening adjacent to and above the discharge outlet of said centrifugal rotor, said inwardly and upwardly contracted channel being provided with a closed top wall, said discharge outlet of the centrifugal rotor being arranged to discharge across the communicating opening between said upwardly and inwardly contracted channel and said catch-chamber whereby the foam and bubbles in the treated fluid are condensed under the combined suction and injector action thus produced.

4. In a centrifugal separator, the combination of a housing having a catch-chamber and an upwardly and inwardly contracted annular channel arranged above and opening downwardly into said catch-chamber at the enlarged lower end of said annular channel and a centrifugal rotor mounted on a vertical 2 axis within said housing and provided with a radial discharge nozzle below the contracted upper end of said annular channel, said con- 'tracted upper end of the annular channel being in open communication with-the inner upper end of said catch-chamber above said discharge-nozzle of the rotor.

5. In a centrifugal separator, the combination of a housing, a centrifugal rotor mounted on a vertical axis within said housing and provided with a discharge nozzle above, said housing having a closed wall contracted upwardly around and below said nozzle, and forming the bottom wall of a catchchamber, a baflie-platecontracted upwardly toward the axis of said rotor and extending above the discharge nozzle therein, said baflleplate forming the top wall of said catchchamber, and a closed dome-like partition plate arranged above said bafiie-plate and 0 forming therewith an upwardly and inwardly contracted channel, said bafiie-plate being provided with an annular opening extending around said nozzle and above the discharge outlets therein, the contracted upper end of said upwardly and inwardly contracted channel being thereb adapted to discharge into the upper end 0 said catch-chamber under a combined injector action'and suction.

6. In a centrifugal separator, the combi- 5 .nation with a housing and a centrifugal rotor journalled in said housin and provided with discharge openin sa'i housing including a catch-chamber iving closed top and bottom walls and a discharge outlet closed by a hydraulic seal, a third clos'ed wall in said housing which forms with the closed top wall of said catch-chamber an upwardly contracted annular channel having its contracted upper end extending around and above said discharge openings in the rotor, the contracted upper-end of said annular channel opening downwardly into the upper part of said catIch-chamber. h f I -ifi n testimony w ereo a x m .si ature.

. v sdniii CARL TZ. 

